Robert m



(N`o Model.) Y

' R. M. DIXON. LAMP. l

No. 525,696. Patented Sepp. 11, 1894.

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UNITED STATES yPATENT O'EEICE.Y

ROBERT M. DIXON, OF EAST ORANGE, NEW JERSEY, ASSIGNOR TO VTHE SAFETY CARHEATING AND LIGHTING COMPANY, OF NEW YORK, N. Y.

LAMP.

SPECIFICATION forming part of Letters latent No. 525,696, datedSeptember 11, 1894. Application tiled December 27, 1893. Serial No.94.262,v (No model.) v

To all whom it may concern.' l

Be it known'that I, ROBERT M. DIXON, a resident of East Orange, Essexcounty,`and State of New Jersey, have invented certain new and usefulImprovements in Lamps, of

which the following is a specification.

My invention relates to lamps for use in railway cars, and in likesituations, and has for its object to utilize the ascending air curzorent from the lamp to remove the foul air from the car and to dischargethe same into the outside air.

A further object of my invention is to insulate the heated lamp from theroof of acar r 5 by producing a circulation of air through the spacebetween the lamp and the roof of the car which will maintain the roofcool and obviate danger of combustion.

To this end my invention consists in the zo construction set forthIherein,illustrated in the accompanying drawings, forming part hereofand more particularly pointed out in the claims. Y

.In the drawings,-Figurel is avertical lonz5 gltudinal section of a lampembodying one form of my invention, and Fig. 2 is a plan view of thelamp proper with certain parts removed for clearer illustration as willbe more fully described. Y

3o In the drawings Aindicates a two-part ring hinged together at a andsecured by the catch b. This ring is suitably suspended from the roof ofa car as by brackets c c and serves to support the principal parts ofthe lamp,

3 5 as will be more fully described hereinafter. Surrounding this twopart ring is a ring B,

one edge d of which is placed against the roof v of the ear, the otheredge e extending down into proximity with the ring A and leaving 4o anannular air space between the ring A and the edge e. A

Supported by the ring A is a reflector C having perforations f therein.This redector in turn serves to support the lower sectionD of thechimney. Above this lower section is a group of draft tubesE which aresupported in a framework composed of heads F and L united by a rigidconnection such as the rod R, entered into nipples S and Tintegral with5o the heads. One of these heads as F may be provided with apertures pand the other as L may be provided with lugsl leaving asuecession of airspaces forming what is substantially an annular passage between the edgeof head L and the casing H. This frarne- 5 5 work is supported by thecasing H, as shown, which in turnks supported by the brackets c,

or if desired, the casing maybe otherwise supported. Surrounding theframework and tubes E, is a second casing G having perfora- 6o tions gand having a turned over edge g2 screw-threaded or otherwise secured tothe head F,which serves to support the casing G. The chimneys E aresurmounted by a deflector plate O mounted on ribs o secured to thecasing G.

' The lower section of the two part ring A has a circumferential grooveg within which is seated an elastic packing h. Upon this packing reststhe lip fi of the lamp globe H 7o Resting upon the lip e' and forming anadditional packing for the joint is the ring lc.

The gas-pipel is preferably attached to a nipple I made integral withthe head L and which carries the reflector J and the jets j. The gas'issupplied to the pipe I through the nipple by the pipe K connectedtherewith, as shown. Surrounding the chimney D is a downwardly extendingdeflector plate or ring Mwhich may be supported in any suitable 8omanner, as by the brackets c c.

Surrounding the casing H is a funnel N which is supported by thebrackets c c and extends through the space between the decks B B2 of thecar roof. Mounted upon the up- 8 5 per deck B2 of the car roof `isacollarP which surrounds the upper end of the funnelNand the tubes E.The whole is surrounded by a cowl or ventilator Q fitting over thecollar P.

During operation of vthe lamp, the air en- 9o ters the lamp through theannular space between the ring A and the edge e passing upward as shownby the arrows between the funnelsN and the casing H into the collar P.Part of the air passes out through the cowl Q and part enters the secondcasing G through the apertures g', thence it passes downward into thespace between the casing H and chimney D, thence under the deflectorplate M through the apertures f in the rellector C', loo into the globeor 5 combustion chamber H. The products of combustion travel upthroughthe chimney D and tubes E into the cowl Q and out to the open air.

Owing to the construction and arrangement of the several parts, the lampwill burn with a steady flame and at the same time willserve to rid thecar of the impure air therein, it being well known that such impure airis pres` ent in the upper strata of the car in greatest proportion. Thecirculation of air between the lamp and the roof of the car will alsoserve to keep the roof cool and ger of combustion.

Having described my invention, what I claim is l. In a car lamp thecombination with a combustion chamber or globe and burner of the rings Aand B, casing H, funnel N, open communication from the interio-r of thecar to the combustion chamber through the chamber formed between thecasing H and funnel N, and an open exit for the products of combustion,substantially as described.

2. In a car lamp the combination with a burner and combustion chambertherefor, of a casing G, a casing H, extending below said casing G, adownwardly extending dedector plate M, openings below said detlectorplate which communicate with said combustion chamber and 'an open exitfor the products of combustion, substantially as described.

3. The combination in a car lamp of afunnel N extending between thedecks of a car roof and exit passages for the products of combustionarranged within the funnel, substantially as described.

4. The combination in a car lamp of a suitably supported head F, casingG supported prevent dan-v by said head, a plate surmounting the casing Gand secured thereto by ribs o, as specified. 5. The combination in a carlamp of draft @n tubes, a casing H, a perforated casing G connectingwithrsaid casing H and surrounding said tubes, a downwardly extendingdeectn! plate M, a globe or combustion chamber H', j the inlet to saidcombustion chamber through the perforations in the casing G, and exitpassages for the products of combustion arranged within the'funnel H,and casing G, as specified.

6. A car lamp having its combustion cham- 5o ber located within the car,exit passages 'therey from extending through the roof of the car, acasing surrounding said exit passages and extending from within the carthrough the roof thereof, and means for supplying air .5g to thecombustion chamber from the interior of the car around the top of saidcasing, nl specified. l 7. The combination in a car lamp, ofafunp nel Nextending between the decks of a car 6e roof, a casing H within saidfunnel N, acombustion chamber, draft tubes communicating with saidcombustion chamber and located within the casing H, whereby air may beconveyed from the interior of the car to the out- 65 j side between thecasing H and funnel N and to the combustion chamber around said casingH, substantially as and for the purposes specified.

ROBERT M. DIXON.

lVitnesses:

Gno. E. MORSE, HARRY M. TURK.

